How many valence electrons does “Na” (atomic number 11) have?

Based on its chemical properties, identify the position of each chemical family on the periodic table.

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

Using the first volume and temperature reading on the table as v1 and t1, solve for the unknown values in the table below. remember to use the rules of significant figures when entering your numeric response.